A novel process for the biological detoxification of non-metal residue from waste copper clad laminate treatment: From lab to pilot scale

Zhou, Wei; Chen, Yanzhi; Cheng, Haina; Liu, Xiaowen; Tian, Zhong‐Qun; Zhang, Lijuan; Kang, Xin; Ge, Yang; Peng, Jing; Sun, Jianxing; Wen, Yong; Wang, Wei; Zhou, Hongbo

doi:10.1016/j.jclepro.2020.120116

Cited by 4 publications

(2 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…CCL consists mainly of copper foil and composite laminate as the insulation layer, which is made from polymer resin, a flame retardant, glass fiber cloth (GF), and other additives ( Figure 1 ) [ 9 ]. The performance of high-frequency CCLs is mainly determined by the polymer resin [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Flame-Retardant GF-PSB/DOPO-POSS Composite with Low Dk/Df and High Thermal Stability for High-Frequency Copper Clad Applications

Zheng,

Zhang,

Qiu

et al. 2024

Polymers

View full text Add to dashboard Cite

In the field of high-frequency communications devices, there is an urgent need to develop high-performance copper clad laminates (CCLs) with low dielectric loss (Df) plus good flame retardancy and thermal stability. The hydrocarbon resin styrene-butadiene block copolymer (PSB) was modified with the flame-retardant 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide/polyhedral oligomeric silsesquioxanes (DOPO-POSS) to meet the demands of high-frequency and high-speed applications. The resulting DOPO-POSS-modified PSB was used as the resin matrix along with other additives to fabricate PSB/DOPO-POSS laminates. At a high-frequency of 10 GHz, the laminates containing 20 wt.% of DOPO-POSS and with a thickness of 0.09 mm exhibited a Df of 0.00328, which is much lower compared with the commercial PSB/PX-200 composite (Df: 0.00498) and the PSB without flame retardancy (Df: 0.00453). Afterwards, glass fiber cloth (GF) was used as a reinforcing material to manufacture GF-PSB/DOPO-POSS composite laminates with a thickness of 0.25 mm. The flame retardancy of GF-PSB/DOPO-POSS composite laminate reached vertical burning (UL-94) V-1 grade, and GF-PSB/DOPO-POSS exhibited higher thermal and dynamic mechanical properties than GF-PSB/PX-200. The results of a limited oxygen index (LOI) and self-extinguishing time tests also demonstrated the superior flame-retardant performance of DOPO-POSS compared with PX-200. The investigation indicates that GF-PSB/DOPO-POSS composite laminates have significant potential for use in fabricating a printed circuit board (PCB) for high-frequency and high-speed applications.

show abstract

Section: Introductionmentioning

confidence: 99%

Flame-Retardant GF-PSB/DOPO-POSS Composite with Low Dk/Df and High Thermal Stability for High-Frequency Copper Clad Applications

Zheng,

Zhang,

Qiu

et al. 2024

Polymers

View full text Add to dashboard Cite

show abstract

“…Kumar et al [ 41 ] used Pseudomonas balearica SAE1 to achieve the dissolution of Au and Ag, resulting in a recovery of 68.5% Au, and 33.8% Ag, at pH of 9.0, pulp density of 10 g/L, temperature of 30 °C, and glycine concentration of 5 g/L. Zhou et al [ 42 ] proposed biological detoxification and comprehensive utilization of non-metal residue from waste copper clad laminate. The leaching rate of metal was close to 100% and was 8.7% higher than that by dilute sulfuric acid leaching.…”

Section: Introductionmentioning

confidence: 99%

Bioleaching of Typical Electronic Waste—Printed Circuit Boards (WPCBs): A Short Review

Yang

Wan

et al. 2022

IJERPH

View full text Add to dashboard Cite

The rapid pace of innovations and the frequency of replacement of electrical and electronic equipment has made waste printed circuit boards (WPCB) one of the fastest growing waste streams. The frequency of replacement of equipment can be caused by a limited time of proper functioning and increasing malfunctions. Resource utilization of WPCBs have become some of the most profitable companies in the recycling industry. To facilitate WPCB recycling, several advanced technologies such as pyrometallurgy, hydrometallurgy and biometallurgy have been developed. Bioleaching uses naturally occurring microorganisms and their metabolic products to recover valuable metals, which is a promising technology due to its cost-effectiveness, environmental friendliness, and sustainability. However, there is sparse comprehensive research on WPCB bioleaching. Therefore, in this work, a short review was conducted from the perspective of potential microorganisms, bioleaching mechanisms and parameter optimization. Perspectives on future research directions are also discussed.

show abstract

Survey of diverse hydrometallurgy techniques for recovering and extracting valuable metals from PCB waste: an overview

Sudarsan,

Anandkumar,

Trofimov

2024

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

A novel process for the biological detoxification of non-metal residue from waste copper clad laminate treatment: From lab to pilot scale

Cited by 4 publications

References 34 publications

Flame-Retardant GF-PSB/DOPO-POSS Composite with Low Dk/Df and High Thermal Stability for High-Frequency Copper Clad Applications

Flame-Retardant GF-PSB/DOPO-POSS Composite with Low Dk/Df and High Thermal Stability for High-Frequency Copper Clad Applications

Bioleaching of Typical Electronic Waste—Printed Circuit Boards (WPCBs): A Short Review

Survey of diverse hydrometallurgy techniques for recovering and extracting valuable metals from PCB waste: an overview

Contact Info

Product

Resources

About